45 QUESTIONS IN THIS CATEGORY:

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We do not remove companies that have been delisted from the exchanges. We store the market data exactly as it happened on that date in time.
Jan 18, 2023

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Any trade that occurs will be included, even if it’s canceled. Canceled trades will be indicated by the Trade Correction field ‘e’.
Jan 18, 2023

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We source our data directly from the SIPs. This includes every single trade and NBBO quote that occurs on any of the 19 US exchanges. Other providers typically source from a handful of exchanges instead of all of them.
Jan 18, 2023

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We receive data directly from both SIPs (Security Information Processors) as RAW binary feeds rather than via retransmission or through an intermediary.
Jan 18, 2023

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Outstanding shares refers to stock that is currently held by investors.
Jan 17, 2023

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All data provided on Polygon is provided for informational purposes only, and is not intended for trading or investing purposes. Polygon provides all information as is. You must not redistribute information displayed on or provided by Polygon. Stock prices displayed in the ticker are from a subset of exchanges, this price does not represent the real-time price from the SIP.

© Polygon.io, Inc